Steam-boiler furnace



(No Model.) 2' Sheets-Sheet -1.

J.. V. KENNY.

. STEAM BOILERPURNAGE. No. 598,997. Patented Feb. 15,1898;

M I I 4JM7V 7 m: Nonms PETERS 00.. wumurnojmsumomu, u. c

UNITED STATES PATENT OFFICE.

JAMES v. KENNY, OF LINCOLN, NEBRASKA.

STEAM-BOILER FURNACE.

SPECIFICATION forming part of Letters Patent No. 598,997, dated February15, 1898. Application filed May 22, 1897. Serial No- 637, '756. (Nomodel.)

To all whom it may concern-.-

Be it known that I, JAMES V. KENNY, a resident of Lincoln, in the countyof Lancaster and State of Nebraska, have invented certain new and usefulImprovements in Steam-Boiler Furnaces; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to an improvement in steam-boiler furnaces, andmore particularly to such as employ water-tubes, theobject of theinvention being to provide a vertical Water-tube-boiler furnace whichshall be selfcont'ained and in which the tubes and waterspace shall beso arranged as to result in an entirely free and uninterruptedcirculation, and to so arrange the apparatus as to provide a large areaof steam-space surrounded by a superheater.

With this object in View the invention consists in certain novelfeatures of construction and combinations and arrangements of parts, ashereinafter set forth, and pointed out in the claim. I

In the accompanying drawings, Figure 1 is a vertical cross-section of asteam-boiler furnace embodying my improvements. Fig. 2 is a horizontalcross-section.

A represents a suitable base on which my improved boiler-furnace islocated, said base constituting also an ash-pit A,over which the grate Aof the fire-chamber is located.

In constructing my improved furnace I employ an outer shell 1, withinthe lower por-. tion of which and removed a short distance therefrom acomparatively short shell 2 is located and constitutes the vertical wallof. the combustion-chamber 3, said shells 1 and 2 being connected bymeans of bolts 4 and the space 5 between them constitutingawatercompartment or jacket. A crown plate or dome 6 is secured at its lowerperipheral edge to the upper end of the shell 2 and'is made with acentral opening 7, surrounded by an annular flange 8, to which the lowerend of a short flue 9 is securely riveted. A flue-plate 10 is disposedabove the short flue 9 and provided with a central opening 11,surrounded by a depending annular flange 12, to which the upper end ofthe short flue 9 is secured.

The flue-plate 10 is also made with a'number of holes 13 for theaccommodation of the lower ends of the boiler-tubes 14, which latter arearranged in annular form, as most clearly shown in Fig. 2. The lowerends of the tubes 14 communicate with the space between the flue-plate10 and the crown plate or dome 6, which space constitute'saWater-chamber 15, communicating at its lower end with the annularwater-space 5,surrounding the combustion-chamber. 14 communicate withholes inan upper flueplate 16, the latter being adapted to close theupper end of the vertical flue 17, formed by the annular series ofwater-tubes 14.

The annular series of tubes 14 is surrounded I combustion-chamber and atits upper end with the steam-dome 21. The steam-dome is quite large andclosed at its top by means of a cover 22, securely fixed at itsperiphery to the upper end of the outer shell 1 by means of an angleiron ring 23 and bolts 24. The top or cover of the steam-dome is alsosuitably braced by means of adjustable tie-rods 24 constructed insections connected together by means of turnbuckles 25, one end of eachtie-rod being secured to the cover 22 and the other end to the centralportion 26 of the upper flueplate 16. Holes or openings 27 are made inthe shells 1 18 at several points (three being shown in Fig. 2) near theupper end of the water-jacket formed between said shells, and within thecentral space or flue 17, at a point some distance below the openings oroutlets 27, a deflector 28 is located and supported by means of a rod29, attached at its upper end to the upper flue-plate 16, said deflectorbeing adapted to cause the heat and products of combustion arisingthrough the short flue 9 from the combustion-chamber to be directedamong the water-tubes 14 to heat them. Af-- ter circulating among theWater-tubes and in The upper ends of the tubesthrough the smoke-jacketwill act as a super- 1 heater for the steam in the steam-dome and alsofor the water contained in the b oiler, es; pecially the water containedin the space between the shells 1 and 18. I prefercalso to provide holesat below the smoke-jacket and communicating with the space occupied; bythe tubes, whereby to permit soot and ashes v 5 atent, .s..

b btbe omel dged etween. t e ubes and on the lower tube-plate to beblown oi.

A su tabl team-pipe 3 mad be om.- municate with the steam-dome, and a,suitl wa ergege 34 and a e eatthg ge 3, w l s be pie i e d ni he bew bwhi h t e ewee m eetee m y e also ade e e it ssb W bt e e eit' eeeeethem: er 15, e e i t Th hel lW l be provided with a normally closedmanhole38, whereby se st. m be ead bad ethe We.- ter space or charnberlo, and a manhole 39=wi1l be p de for h team r rur ee tethe eeve ofthe steam d ome.

Thelower end; of the water spaceorchamber w h sur u s the c m uston-member, will be providedwith a blow-off pipe 0.

My i t d. bo e is se ten ee, and e u es d wet t-sp ee t e e arran ed ato aiford an entirelyffree and uninterrupted circulation. By my improvedarrangeln entit large area, of steam-space is provided, s uru e by sm keek eb acts s a superheater and results in the formation of dry steam.My improved construction is particularly adapted for high pressure, willoperate to effect the quick formation of steam, and the parts arereadily accessible for the purpose of cleaning, 8pc.

" My improvements. are simple in construction and effectual in allrespects in the performance of its functions.

Various slight changes might be made in the details of construction ofmy invention Withou depart ng rom t Spirit thereof limitingitsscope,'and hence I do not wish to v limit myself to the precisedetails herein set 1 forth.

Having fully described my invention, What I aim a new, desire o. sec reby Letters lb steeut-beil rfiurnaee, he ombinat on withebbntbllStibn-ebamber at one end; and a am-dome ettbe ether, f a series.of waterebesd spesed betweentbe c mbust n-che 3 beer an tbee eememe, ammunica ion i twee t pa e ee ep ed: byt e W er-tube and thecombustion-chamber, a smoke-jacket t :r 11, ,d gtb st am-demand thewater- 1 tu es, and hav g n outlet at its lo r n sa d, sme terj eket ommnicatingw th. t e

a spe eee np ed by the w ter-tub g' t the up- 1 per nd tbet efi a n e sommun c l with sa d spateeee piee; bythe w ter-tu let poin s low he mek-i ek subst t elly as, set f rth- In testimony whereof I have signedthis specification in the presence of two subscribing witnesses.

JAMES v. KENNY.

tn sses:

F'EANK ARKS, SMt -t,

